Medical capsule device actuated by radio-frequency (rf) signal

Details Medical capsule device actuated by radio-frequency (rf) signal Medical capsule device actuated by radio-frequency (rf) signal

A - Human Necessities

61

M

A61M 37/00 (2006.01) A61B 5/07 (2006.01) A61B 10/00 (2006.01) A61F 2/00 (2006.01)

Patent

CA 2052562

-21- Abstract of the Disclosure MEDICAL CAPSULE DEVICE ACTUATED BY RADIO-FREQUENCY (RF) SIGNAL A medical capsule device for releasing and/or collecting a substance at a defined location in the gastrointestinal tract. The device has a capsule body defining one or more apertures in the circumferential wall thereof and a sleeve valve rotatably positioned therein having one or more corresponding apertures in the circumferential wall thereof. The sleeve valve comprises a coil and electrically connected heatable resistor which are operatively associated with an actuator member formed of a shape memory alloy responsive to heat and which will move from a non-heated first shape to a heated second shape. Actuator stop means are provided in the capsule body for being engaged by the actuator member during movement from the non-heated first shape to the heated second shape so that the actuator member movement will serve to rotate the sleeve valve to either an open or closed position.

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